Obscure is fine. C-list is fine. Do any names come to mind?
I define an antihero as someone with a definite code of honor, but whose goals or methods, while not viscerally despicable, are nevertheless criminal under modern law.
The above definition is of course subjective. I deem rape to be viscerally despicable so I would never deem a rapist an antihero but always a villain. Thievery, on the other hand, is not viscerally despicable to me if the target can afford the loss. (Stealing from Grandma in her tiny little house is viscerally despicable to me. Stealing from a billionaire is not.) Nor is killing viscerally despicable to me if the target is a killer, rapist, kidnapper, torturer, or drug pusher.
If you're going to use a different definition from mine, then please just state what it is.
By my definition, and in my eyes, Ghost Rider, Punisher, Wolverine when he's not being written for children, Conan, and Gambit, Catwoman, and Domino when pursuing their thieving ways are all antiheroes.
From my list above, the only character who hasn't already had a movie or doesn't have one planned is Domino, so I guess I'll make Domino my big idea. I'd make her a full-blown unrepentant thief. But I'd give her the code of honor she has in the comics, which I don't think has ever been stated, but seems to exclude things like killing for hire, kidnapping, torture, or selling drugs, and seems to include some basic heroism like rescuing someone from a burning building or stopping someone else from killing an innocent. She'd be a thief and occasionally a very reluctant hero. She would never be viscerally despicable. She would, however, be hard as nails in her interaction with other people. No coddling the weak - though she would stop someone from killing the weak, but afterward she would chase the weakling away with instructions never to return. No pollyanna optimism.
Got any other ideas?